RoutineName Mark ofIntroduction Purpose E02ACF Example TextExample Plot 1 nagf_fit_1dmmax Minimax curve fit by polynomials E02ADF Example Text Example DataExample Plot 5 nagf_fit_1dcheb_arb Least squares curve fit, by polynomials, arbitrary data points E02AEF Example Text Example DataExample Plot 5 nagf_fit_1dcheb_eval Evaluation of fitted polynomial in one variable from Chebyshev series form (simplified parameter list) E02AFF Example Text Example DataExample Plot 5 nagf_fit_1dcheb_glp Least squares polynomial fit, special data points (including interpolation) E02AGF Example Text Example DataExample Plot 8 nagf_fit_1dcheb_con Least squares polynomial fit, values and derivatives may be constrained, arbitrary data points E02AHF Example TextExample Plot 8 nagf_fit_1dcheb_deriv Derivative of fitted polynomial in Chebyshev series form E02AJF Example Text 8 nagf_fit_1dcheb_integ Integral of fitted polynomial in Chebyshev series form E02AKF Example TextExample Plot 8 nagf_fit_1dcheb_eval2 Evaluation of fitted polynomial in one variable from Chebyshev series form E02BAF Example Text Example DataExample Plot 5 nagf_fit_1dspline_knots Least squares curve cubic spline fit (including interpolation) E02BBF Example Text Example DataExample Plot 5 nagf_fit_1dspline_eval Evaluation of fitted cubic spline, function only E02BCF Example Text Example Data 7 nagf_fit_1dspline_deriv Evaluation of fitted cubic spline, function and derivatives E02BDF Example Text Example Data 7 nagf_fit_1dspline_integ Evaluation of fitted cubic spline, definite integral E02BEF Example Text Example DataExample Plot 13 nagf_fit_1dspline_auto Least squares cubic spline curve fit, automatic knot placement E02BFF Example Text Example Data 24 nagf_fit_1dspline_deriv_vector Evaluation of fitted cubic spline, function and optionally derivatives at a vector of points E02CAF Example Text Example DataExample Plot 7 nagf_fit_2dcheb_lines Least squares surface fit by polynomials, data on lines parallel to one independent coordinate axis E02CBF Example Text Example DataExample Plot 7 nagf_fit_2dcheb_eval Evaluation of fitted polynomial in two variables E02DAF Example Text Example DataExample Plot 6 nagf_fit_2dspline_panel Least squares surface fit, bicubic splines E02DCF Example Text Example DataExample Plot 13 nagf_fit_2dspline_grid Least squares surface fit by bicubic splines with automatic knot placement, data on rectangular grid E02DDF Example Text Example DataExample Plot 13 nagf_fit_2dspline_sctr Least squares surface fit by bicubic splines with automatic knot placement, scattered data E02DEF Example Text Example DataExample Plot 14 nagf_fit_2dspline_evalv Evaluation of fitted bicubic spline at a vector of points E02DFF Example Text Example Data 14 nagf_fit_2dspline_evalm Evaluation of fitted bicubic spline at a mesh of points E02DHF Example Text Example Data 23 nagf_fit_2dspline_derivm Evaluation of spline surface at mesh of points with derivatives E02GAF Example Text Example Data 7 nagf_fit_glin_l1sol ${L}_{1}$-approximation by general linear function E02GBF Example Text Example Data 7 nagf_fit_glinc_l1sol ${L}_{1}$-approximation by general linear function subject to linear inequality constraints E02GCF Example Text Example Data 8 nagf_fit_glin_linf ${L}_{\infty }$-approximation by general linear function E02JDF Example Text Example DataExample Plot 24 nagf_fit_2dspline_ts_sctr Spline approximation to a set of scattered data using a two-stage approximation method E02JEF 24 nagf_fit_2dspline_ts_evalv Evaluation at a vector of points of a spline computed by E02JDF E02JFF 24 nagf_fit_2dspline_ts_evalm Evaluation at a mesh of points of a spline computed by E02JDF E02RAF Example Text 7 nagf_fit_pade_app Padé approximants E02RBF Example TextExample Plot 7 nagf_fit_pade_eval Evaluation of fitted rational function as computed by E02RAF E02ZAF Example Text Example Data 6 nagf_fit_2dspline_sort Sort two-dimensional data into panels for fitting bicubic splines E02ZKF 24 nagf_fit_opt_set Option setting routine E02ZLF 24 nagf_fit_opt_get Option getting routine